Improvement in fasteners for meeting-rails of sashes



UNITED ,STATES PATENT OFFICE.

EFHRAIM PARKER, OFBOSTON, MASSACHUSETTS.

Specification forming part of Letters Patent No. 192,080, dated J une 19, 1877;

April is, 1877.

application tiled ,To all 'whom it may concern:

Be it known that L'EPHRMM PARKER, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and usei'ul Improvement in Sash-Locks, of which the following` is a speciiication:

The nature of niy invention consists in the novel construction andarrangeinentoil asashlock, having a sliding and rotating springbolt and spiral inclines, the head ot' the bolt being inclined on its lower side, so that when the sash is closed the bolt will slide into place automatically, and thus lock the sash; and also in a peculiar device, by which the head of the bolt, after it has passed through the 4bolt-plate, may be turned so as to engage with the bolt-plate, and be drawn back by a spiral incline, this action serving to draw the two sashes firmly together, closing the joint between theni,`and preventing all rattling, all as hereinafter more l'ull y described andl claimed.

Figure lis a perspective View of niy invention as applied. Fig. 2 is a vertical section of the same. Fig. 3 is a vertical section, show' ing the bai' of the inner or lower sash above the bar of the outer or upper sash. Fig. 4. is aplan ot' niy invention. Fig. 5 is a detail \iew of the bolt, it being turned up so as to cause the head to engage with the bolt-plate.

ln the drawings, A and B represent the two sash-bars, A being the upper bar ot' the lower sash, and B the lower bar ot' the upper sash. To the bar AI attach a housing, U, which contains a bolt, L .K H, Which is so made that it can `be turned on its axis, or

inoved longitudinally, or both. Figs. 2 and 3, is a spring, which serves to throw the bolt inwardly. The head L of the bolt is in the forni of a T, (see Figs. 4 and 5,) the lower side being inclined. (See L, Figs. 2 and 3.)

To the rear end of the bolt L K H, I attach, in connection with the handle, a spiral incline, M, Figs. 2, 3, and 4. This spiral incline, M engages with a corresponding one, C', attached to the liousingC, so that when the bolt is turned on its axis, as it may be by the handle M', these inclines will so act as to draw the bolt outward-that is, against the action ot' 'the spring-and will cause the head L of' the bolt to bind against the bolt-plate E, Figs. 1,4, and 5, and thus draw the bolt-plate and the sash-bar B, to which the bolt-plate is attached, hard up against the sash-bar A; The boltplate E has a longitudinal slot, E', Fig. 3, to receive the head L of the bolt, the slot being wide enough to allow the head ot' the bolt to pass through when the head is level, but it' the bolt is turned so that the head turned up, then the shoulders iorined by the T shape will engage with the bolt-plate. The continued turning of the bolt will cause `it to be drawn back by the action oi' the spiral incline M, and thus the two sash-barsinay be drawn together.

Froni the above it may' be seen that this device is self-locking, t'or it we suppose the saslr bar A to be up, as shown in Fig. 3, then the bolt L K H will extend, as shown, the inclined side ot' the' head L being4 down. Now, it' the sash is lowered, thc incline otf L will ca'use it to retreat as it eonies in contact with the bolt-plate E,- aiid the spring S will canse it (the bolt-liead L) to advance when it gets opposite the opening E in the bolt-plate hi, and thus lock the sash. Now by turningthe bolt by the handle M', as above described, the sash-bars may be brought firmly together.

Having now described the construction and operation ot' niy invention, what l desire to secure by Letters latent is as follows In a sash-lock, the sliding and rotating bolt L K ll, spring S, and spiral inclines M U', in combination with the bolt-plate E,.slotted at E', all operating together,substantially as d escribed, and t'or the purpose set forth.

EPHRAIM PARKER.

Witnesses: i

SAML. A. O'rIs, WILLIAM EDsoN. 

